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You're reading from Vulkan Cookbook Work through recipes to unlock the full potential of the next generation graphics API—Vulkan

Product type Paperback

Published in Apr 2017

Publisher Packt

ISBN-13 9781786468154

Length 700 pages

Edition 1st Edition

Languages

C++

Tools

Visual Studio

Concepts

Graphics Programming

Author (1):

Pawel Lapinski

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Table of Contents (13) Chapters

Preface

1. Instance and Devices FREE CHAPTER

2. Image Presentation

3. Command Buffers and Synchronization

4. Resources and Memory

5. Descriptor Sets

6. Render Passes and Framebuffers

7. Shaders

8. Graphics and Compute Pipelines

9. Command Recording and Drawing

10. Helper Recipes

11. Lighting

12. Advanced Rendering Techniques

Freeing descriptor sets

If we want to return memory allocated by a descriptor set and give it back to the pool, we can free a given descriptor set.

How to do it...

Use the handle of a logical device to initialize a variable of type VkDevice named logical_device.
Take the descriptor pool that was created with a VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT flag. Store its handle in a variable of type VkDescriptorPool named descriptor_pool.
Create a vector of type std::vector<VkDescriptorSet> named descriptor_sets. Add all the descriptor sets that should be freed to the vector.
Call vkFreeDescriptorSets( logical_device, descriptor_pool, static_cast<uint32_t>(descriptor_sets.size()), descriptor_sets.data() ). For the call provide the logical_device...

The rest of the chapter is locked

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Authors (1)

Lapinski

Pawel Lapinski is a graphics software engineer at Intel Corporation. His professional career started 10 years ago when he and his friends were hired to develop a 3D training/simulation application using C++, OpenGL, and Cg, which was later improved with added head-mounted display support and stereoscopic image generation. Since his studies, Pawel has been interested in 3D graphics and especially in the open multiplatform OpenGL library. He wrote a diploma about the Effective usage of vertex and fragment shaders. Since then, he has continued to pursue opportunities to work with 3D graphics and expand his knowledge in the field. He had the opportunity to join a team that was developing one of the biggest CAVE-like installations at the Polish Gdansk University of Technology. His responsibility was to prepare 3D visualizations using Unity3D engine and add stereoscopic image generation and support for motion tracking. Pawel's whole career has involved working with computer graphics, the OpenGL library, and shaders. However, some time ago, already as a programmer at Intel, he had the opportunity to start working with the Vulkan API when he prepared validation tests for the Vulkan graphics driver. He also prepared a series of tutorials teaching people how to use Vulkan and now he wants to share more of his knowledge in the form of a Vulkan Cookbook.

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